Gabriela CowperthwaiteEarnings: $2.2 millionConsider your childhood memories of SeaWorld ruined. This documentary undercovers what happens to whales in captivity and specifically focuses on Tilikum, an orca who was involved in the death of three people.

Michael Moore Earnings: $222,446,882Whether you love him or hate him, you've got to admit he brings a number of issues to light. In this documentary, Moore takes a long, hard look at George W. Bush, the War on Terror and its subsequent media coverage.

Michael Moore Earnings: $58,008,423School shootings are still an on-going tragedy with no clear answers. In this documentary, Moore tries to find out what lead to the mass killing at Columbine High School in 1999, in addition to other gun violence.

Alex GibneyEarnings: $4,854,164As this documentary shows, the collapse of Enron in 2001 wasn't about greed and money. It was about something more deep-seated and psychological than making it rain. The film was based off of a 2003 book by the same name.

Robert Kenner (pictured)Earnings: $4,606,199Hungry? This documentary will having you thinking twice about your next meal. Following corporate farming in America, it uncovers the alleged harmful and abusive practices toward both humans and animals in the industry.

Heidi Ewing, Rachel GradyEarnings: $1,013,596This documentary shows what goes on at a Christian summer camp, including being taught about their God-given fortune-telling gifts, among other things. Not long after the release of the film, the camp featured in the documentary was shut down due to the negative attention it received from the movie.

Havana MarkingEarnings: $101,543This film follows four contestants in the musical competition television show called 'Afghan Star,' which is similar to our 'American Idol.' When the first of these contestants is eliminated, her farewell performance is deemed provocative and she subsequently receives death threats and is eventually evicted from her apartment.